JPH0133323Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial field of application] This invention mainly relates to board materials used as building materials and packaging materials.

[Conventional technology]

This kind of plate material is required to have strength, be easy to process, and have heat insulating, soundproofing, and moisture-proofing properties. Wood is the most commonly used material because it has these properties on average.

However, wooden boards are generally expensive, heavy, and often do not have sufficient heat insulation and sound insulation properties. For example, if it is used for roof sheathing, the attic will become very hot under the scorching summer sun, which is often not desirable for cooling purposes. Furthermore, when used as packaging materials, they tend to bend under weight, requiring a large amount of reinforcing material, and they also tend to tear at the nailed parts.

In addition, other board materials have particularly strengthened any of the above-mentioned properties and are often used supplementary to wood. For example, styrofoam plates have excellent heat insulation and soundproofing properties, but are not easy to process and are brittle, making them unsuitable for use as exterior materials.

On the other hand, as shown in FIGS. 4 to 6, the front surface 21a or the back surface 21b of the porous thick fiber material 21
A sound-absorbing and heat-insulating material 20 is known in which a double-sided corrugated cardboard structure 22 is attached to the substrate (Utility Model Application Publication No. 55-62706).

Although this sound-absorbing and heat-insulating material 20 has improved sound-absorbing and heat-insulating properties by combining a porous fiber material 21 and a double-sided corrugated structure 22, it is difficult to manufacture this material. I found out that there are some difficulties.

That is, as shown in FIG. 6, the plate-shaped porous fiber material 21 is made of a fiber material such as animal, vegetable, mineral, or synthetic fiber, and the surface layer a is a thick elastic layer containing countless fine voids a'. pine-like pear, and its back layer b
is a porous thick fiber material that is integrally formed into a thin elastic plate containing countless fine voids b′, and because the thick fiber material used as a conventional sound absorbing and insulating material has a uniform density of voids on both sides. This is an improvement over the issue of insufficient effectiveness as a sound-absorbing and heat-insulating material, but it is technically difficult to form two layers with different void densities into one piece, resulting in poor workability and high cost. , it lacked practicality.

However, although the porous thick fiber material 21 has extremely high hygroscopicity, its front surface 21a or back surface 21b and the front and back liners 22a, 22b of the double-sided corrugated cardboard structure 22 are bonded with adhesive such as starch glue. Since full-surface adhesion (so-called surface adhesion) is performed,
There was also a drawback in that the product 20 after being pasted was warped, and the warping was almost unavoidable.

[Purpose of invention]

Therefore, this invention made the core material of the above-mentioned sound-absorbing and insulating material inexpensive and easily available, solved the above-mentioned warping problem, and without impairing the various average properties of wood, especially the heat-insulating material. The purpose of this invention is to provide a board material with further improved performance and soundproofing properties.

[Structure of the idea]

In other words, this idea consists of plywood as a main body, with one corrugated corrugated sheet corrugated on one or both sides of the corrugated sheet, with one corrugated top attached, a paper liner pasted on the other corrugated sheet, and a gap between the plywood and the paper liner. In both sides, chevron-shaped spaces whose directions are alternately reversed are continuously provided.

Plywood is a board made by laminating several thin sheets (veneer or plywood) cut from thick wood with adhesive so that the wood grains are perpendicular to each other. Compared to conventional porous thick fiber materials, it has great practical value because it is easy to bond, has high strength due to its cross-grain structure, and is inexpensive and easily available. big.

The material for the corrugated plate is desirably one that has excellent heat insulation properties, can be easily corrugated, is inexpensive, and can be easily bonded, and is preferably made of paper such as kraft paper. Further, paper laminated with a cloth such as flat yarn, or paper laminated with a plastic film is more preferable because it has greater heat insulation and excellent strength. Plastic materials can also be used because they have excellent heat insulation properties and can be corrugated.

Kraft paper is used as the liner that is attached to the plywood through the corrugated sheet.

〔Example〕

Next, some representative embodiments of this invention will be described based on the drawings.

First, in Figure 1, plywood 1 made of plywood
Corrugated kraft paper plate with corrugated processing on one side 2
are adhered by applying adhesive to the top of the corrugated plate 2, and kraft paper 3 is adhered to the top of the corrugated plate 2 by applying adhesive to the top of the corrugated plate. Because of the shape of the corrugated sheet 2, between the plywood 1 and the kraft paper 3, there are continuous chevron-shaped spaces 4 and 5 whose directions are alternately reversed.

In this way, the bonding relationship between the plywood 1, the corrugated sheet 2, and the kraft paper liner 3 of the board materials of this example is that they are all bonded through the corrugated sheet 2, that is, they are bonded to the corrugated tops of the front and back sides of the corrugated sheet 2. It's swaying.

Therefore, all of the bonding parts are line bonding, and are not surface bonding as in the conventional example (FIGS. 4 and 5).
As a result, warpage after adhesion hardly occurs, and the conventional problems have been solved. However, the adhesive strength does not pose any practical problems even if it is a line adhesive, so
Adhesive savings also occurred.

In addition, since the main body is plywood 1, nailing and sawing are easy and it is strong, and since there are spaces 4 and 5 between the plywood 1 and the kraft paper 3, heat conduction is reduced. sound is prevented and sound is absorbed. Moreover, the spaces 4 and 5 are made of plywood 1 or kraft paper 3
Since it is a mountain shape that becomes narrower in either direction, there is little convection of air from one side to the other, and the movement of air due to convection is extremely small.

Further, in the embodiment shown in FIG. 2, corrugated plates 2, 2 are glued to both sides of the plywood 1, and paper liners 11, 11 of kraft paper are placed on the tops of the corrugated plates 2, 2, respectively.
It is a board material pasted with. This has even better thermal insulation and soundproofing properties than the previous example.

Furthermore, in the embodiment shown in FIG. 3, ordinary double-sided corrugated cardboard 13, 13 is attached as a liner to the top of the corrugated laminate/corrugated sheets 2, 2 of [paper 6 + cloth 7] adhered to both sides of the plywood 1, respectively. This is an example of plate material.

The plate material of the embodiment shown in FIGS. 2 and 3 can be used not only as a building material for heat insulation and sound insulation, but also as a base material for fittings such as sliding doors. That is, by applying Japanese paper or cloth for fusuma on both sides of the plate material of the above embodiment, it is possible to provide a lightweight and inexpensive fusuma that does not warp.

[Effect of idea]

As explained above, the core material of the board of the present invention is plywood, which has intersecting wood grains, is strong, and is easily available at a lower price than the general market, and the heat and sound insulation structure is laminated on the plywood. Since the adhesive is line-adhesive rather than surface-adhesive, there are almost no problems with warping during manufacturing as in conventional methods.
This enabled smooth mass production. Furthermore, even with such line bonding, there is no practical problem in terms of adhesive strength, so there was also an effect of saving a part of the corrugated board base material (for example, the back liner) and the adhesive.

On the other hand, it can be conveniently used for construction materials and packaging materials by sawing and nailing, and it also has excellent heat insulation properties.
It exhibits soundproofing properties, and if it is used as a building material, such as roof boards, horizontal boards, ceiling boards, etc., it can be used for heating and cooling effectively, and noise can be significantly reduced. It is also suitable as a packaging material for items that are required to maintain constant temperature and humidity. Furthermore, it can be used as a lightweight and inexpensive base material for fittings such as sliding doors. Furthermore, since the structure is simple and a corrugated plate, which is easily produced by corrugating, is used to form the space, it is suitable for mass production and can be provided at a low cost, and has many excellent effects.

[Brief explanation of the drawing]

FIG. 1 is a partial perspective view of a plate showing an embodiment of this invention. FIGS. 2 and 3 are cross-sectional views showing the structure of another example plate material. FIGS. 4 and 5 are external perspective views of conventional sound-absorbing and heat-insulating materials, respectively. FIG. 6 is a partially enlarged sectional view of a conventional example porous fiber material 21. 1...Wood board, 2...Corrugated board, 3...Aluminum foil,
4, 5...Space, 6...Paper, 7...Cross, 1
1...Paper liner.

Claims (1)

[Scope of utility model registration request] By gluing one corrugated corrugated plate to plywood and attaching a paper liner to the other corrugated plate, a chevron-shaped space is continuously created between the plywood and the paper liner. board material.